Re: Comparing different scales

Uri wrote:
> Thanks for helping out Thom.
>
> I am not interested in predicting one using the other. I want to have,
> for each one of
> my subjects, a score that signifies how large a discrepancy there is
> between his/her
> explicit self esteem (ROSE score) and his implicit self esteem (ISE
> score).
>
> Let's call the thing DSE. If a subject has high ROSE and low ISE I
> would like him to
> have a high (positive) DSE. If he/she has low ROSE and high ISE I would
> like him to
> have a low DSE (a negative value). If they're equal, DSE = 0 :)
>
>
> Thanks,
> Uri.

The descriptions of the two measures suggest that they were obtained
using quite different methods; i.e., a rating scale vs some sort of
response time (or response time difference?). If this is the case then
you may have difficulty convincing people that the difference between
the two measures, however they may be transformed, is anything more
than an artifact of the difference between the two methods. This is a
construct validity problem.

.